President Trump is immediately halting cost-sharing payments to insurers, which are the backbone of the Obama era Affordable Care Act.

Those payments help low income Americans buy health insurance on the federal marketplace.

Halting them will cause a spike in premiums for next year.

But late last night the Trump administration said it cannot legally continue the payments because they're not formally authorized by Congress.

New York State Attorney General Eric Schneiderman is threatening to sue the president to defend health care subsidies.

“I will not allow President Trump to once again use New York families as political pawns in his dangerous, partisan campaign to eviscerate the Affordable Care Act at any cost,” Schneiderman said Thursday.